Error: Could not retrieve catalog from remote server: Unknown function str2bool at /etc/puppet/environments/<env>/modules/ntp/manifests/params.pp:40 on node <hostname>

Issue

• Unable to install puppet modules.
• "puppet agent -tv" returns error, "Unknown function str2bool"

# puppet agent -tv
.
.
Error: Could not retrieve catalog from remote server: Error 400 on SERVER: Unknown function str2bool at /etc/puppet/environments/<env-name>/modules/ntp/manifests/params.pp:40 on node <hostname>
Warning: Not using cache on failed catalog
Error: Could not retrieve catalog; skipping run